Did Fredo say in a preview for next week he isn't a pilot he just tells girls that and he just works at Chili's?

Apparently he is both: he is always presented as "flight instructor / waiter".

I think Fredo never imagined that Larissa had got physically so intimate with one of the guys: he was shocked and reacted with a very petty comment... (As if it was unthinkable to want to date a waiter...)